			//禁止查看源代码
			var banLookCode;
			//解除锁屏
			 function upScreenLock(){
				 var defaultScreenLock_password="123";				
				 var screenLock_password=document.getElementById("screenLock-password").value;
				 if(screenLock_password==defaultScreenLock_password){					
					 document.getElementById("screenLock-password").value='';
					 document.getElementById("screenLock-message").innerText="";
					 document.getElementById("dam_zhezhaocheng").style.display="none";
					 //恢复查看源代码
						banLookCode=function(){
							document.onkeydown=function(){
							var e=window.event||arguments[0];
							if(e.keyCode==123){
							return true;
							}else if((e.ctrlKey)&&(e.shiftKey)&&(e.keyCode==73)){
							return true;
							}
							};
							document.oncontextmenu=function(){
								return true;
							}
					 }
					 this.banLookCode();
					
				 }else{
					document.getElementById("screenLock-message").innerText="密码输入不正确！请重新输入"; 
				 }
			 }	
			//锁屏
			function screenLock(){
				document.getElementById("dam_zhezhaocheng").style.display="block";
				/* 禁止查看源代码功能 */
				banLookCode=function(){
					document.onkeydown=function(){
					var e=window.event||arguments[0];
					if(e.keyCode==123){
					alert("小样你想干嘛？");
					return false;
					}else if((e.ctrlKey)&&(e.shiftKey)&&(e.keyCode==73)){
					alert("还是不给你看。。");
					return false;
					}
					};
					document.oncontextmenu=function(){
					alert("小样不给你看");
					return false;
					}
				}
				this.banLookCode();
			}